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  1. #211
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Last Activity: 3 Hours Ago Has been a member for 8-9 years. Has a total post count of 1,391. Received thanks 135 times, giving thanks to others 5 times.
    Quote Originally Posted by Davek0974 View Post
    I have a lot of M6 holes to thread - can you thread-mill that small?
    Cutwel list cutters down to M3, but you might need to sit down when reading the price.
    The most basic 1mm pitch cutter has a list price of 60.66 (Order code - L1211310)
    Avoiding the rubbish customer service from AluminiumWarehouse since July '13.

  2. #212
    Yes it is possible.

    I bought a single form one to do my grid of M12's from here: http://www.drill-service.co.uk/Produ...20000&Tool=799

    You would use the 6mm one with a max cutting OD of 4.8 so you can get into the 5mm pilot holes.

    If you want to go quicker, you can get the multipitch endmills that can make the thread in a single pass but they do become more expensive.

    Have a look on NYCCNC's videos for how to set it all up in Fusion 360.

    Regards
    www.emvioeng.com
    Stocking more goodies than just Smoothsteppers

  3. #213
    Ouch! thats a bit spendy for a thread :)

    Just found a Torch video and they have a similar head to my Tapmatic - theirs is Procunier but the action is the same it seems.

    The only benefit they have is that its all pre-programmed canned cycle stuff. I don't have that luxury but at least it proves it can work.

    I will have a look at the specs on the head for tap-travel below the stop point and see if i can come up with a method of programming :) From memory it was 5mm below the stop point to where the feed disengaged so for a 10mm deep thread you would stop feeding at 5mm, wait for the clutch to disengage then feed out.

  4. #214
    Hmm, thought i could get smart and do it in Fusion360 which comes up with this code...
    (1)
    (T1 D=6. CR=0. - ZMIN=-10. - RIGHT HAND TAP)
    G90 G94 G91.1 G40 G49 G17
    G21
    G28 G91 Z0.
    G90


    (DRILL2)
    M5
    M9
    T1 M6
    S1000 M3
    G54
    M7
    G0 X-5. Y0.
    G43 Z15. H1
    Z5.
    M29 S1000
    G98 G84 X-5. Y0. Z-10. R4. F1000.
    G80
    Z15.


    M9
    G28 G91 Z0.
    M30

    This should be a M6 thread 10mm deep with a 4 second pause, But it seems Mach3 does not recognise G84 so thats out, whatever G84 really is :)

  5. #215
    ebay , 1 and 2 . I have been looking to grab a couple . 5$ instead of 50$. What you say? I think these are ideal for various inside threads
    project 1 , 2, ...

  6. #216
    John S's Avatar
    Lives in Nottingham, England, United Kingdom. Last Activity: 11 Hours Ago Has been a member for 9-10 years. Has a total post count of 1,995. Received thanks 132 times, giving thanks to others 44 times. Referred 1 members to the community.
    G84 is rigid tap cycle.

    You should have bought one of these.




    450 landed in UK.

    No computer, no monitor, no windows license, no Mach licence, No CSIO box of tricks.

    Does rigid tapping, tool changer, pendant, all built in.

    These are going to be a game changer in the future.
    Last edited by John S; 12-09-2016 at 11:27 AM.
    John S -

  7. #217
    Quote Originally Posted by John S View Post
    G84 is rigid tap cycle.

    You should have bought one of these.




    450 landed in UK.

    No computer, no monitor, no windows license, no Mach licence, No CSIO box of tricks.

    Does rigid tapping, tool changer, pendant, all built in.

    These are going to be a game changer in the future.

    You are reading my mind, i have difficulty expressing how i feel about each one of the BOBs available now on market, or it would be expensive, or 5v,or not shielded, or will not do this or that correctly, or ...
    project 1 , 2, ...

  8. #218
    Ouch, nice box. Didn't know about it then though, I also like the more graphical nature of Mach3, tweaks, tricks, customisations etc :)

  9. #219
    This might be getting there, treat it as a drill, chip-break operation, full retract, set peck depth to thread depth minus the 5mm for tapping clutch, pause before retract to allow clutch to disengage then retract.

    I se for a 6mm x 1mm thread so i chose 500 rpm and 500mm/min feed should match the pitch rate of 1mm/rev ??

    Only issue i see here is that it rapids out as G0, will look at that.

    Code:
    (1)(T10  D=6.1 CR=0. TAPER=118DEG - ZMIN=-5. - DRILL)
    G90 G94 G91.1 G40 G49 G17
    G21
    G28 G91 Z0.
    G90
    
    
    (DRILL2)
    M5
    M9
    T10 M6
    S500 M3
    G54
    M7
    G0 X0. Y0.
    G43 Z16. H10
    Z2.
    G1 Z-5. F500.
    G4 P4.
    G0 Z6.
    Z16.
    
    
    M9
    G28 G91 Z0.
    M30

  10. #220
    Sorted, the guys on the Fusion360 forum edited a post-processor so it can feed in, dwell and then feed out.

    Should have it sorted nicely :)

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